Can anyone help with 11-15?

The ratio of the measures of the three angles in a triangle is 2: 9: 4. find the measures of the angels

Michael is training for a marathon. in his first week he plans to run 8miles. what path should he take

Tim open up a new saving account with a $50 deposit and plant to deposit $20 per week into the same account.write an expression to represent the total amount in his savings account.